Saving images to be used on the wiki must be compressed for the web. Right click on your image, open with Microsoft Picture Manager go to edit picture then on the right choose compress either for documents or the web. This helps with the uploading speed when in the wiki a full size image can be very slow.
Up loading a video to You Tube follow their instructions and this requires an email address.http://www.youtube.com
If you have to use a Google image remember to put the image's url in your referencing
Timeline / Countdown:-see timetable document
How to attach a powerpoint to your wiki page:
Create an account in http://www.slideshare.net/ ,you will need to sign up using your email and a password to create My Slidespace. During this creation choose Education and use only you first name etc. Then login with your details, go to the Upload tab, browser & select, find your file, settings "only me", make sure your settings enable embedding. Copy the code then go back to your wiki page, edit, embed widget, use the other html section and paste your code in, then save your page. Good luck
Creative tips for your presentation:
Timeline / Countdown:-see timetable document
How to attach a powerpoint to your wiki page:
Create an account in http://www.slideshare.net/ ,you will need to sign up using your email and a password to create My Slidespace. During this creation choose Education and use only you first name etc. Then login with your details, go to the Upload tab, browser & select, find your file, settings "only me", make sure your settings enable embedding. Copy the code then go back to your wiki page, edit, embed widget, use the other html section and paste your code in, then save your page. Good luck